Block height

Block height is the sequential number of a block measured as its distance from the genesis block, giving each block a position in the chain's history.

Height is the chain's clock: genesis is zero and each subsequent block increments it, so height 18,000,000 means eighteen million blocks after start. Heights anchor historical queries — you ask for a balance at a height, or logs across a fromBlock-to-toBlock range. Near the tip heights can be briefly contested during a reorg, so services wait for confirmations before treating a height as settled. Against our archive RPC you can pin any query to a specific height and get the canonical state at that point.